How to read big file line by line in java?

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This programs shows you how to read big file line by line in java?

Learn how to write a program in java for reading big text file line by line

In this tutorial I will explain you how you can read big file line by line
without using large memory. With the help of the program discussed here you will
be able to read big size such as 5GB, 10GB or more. Many times you may have to
read the big file in your java program. For example you have to process some
legacy data and add it to your new database system.

Example discussed here is very useful in reading big file line by line in
Java.

In this tutorial we will use java.io.BufferedReader
and java.io.FileReaderwith classes of java.io package.
These two classed will help us in making java program which reads the big file
line by line.

About java.io.BufferedReader
class

This class is used to read character files easily in Java program.
Constructor takes file name as parameter.

About java.io.BufferedReader class

This class is used to efficiently read characters, arrays, and lines
from input stream. Its constructor takes input stream as input. Important
methods of java.io.BufferedReader class is: